From: Scott Wood <scottwood@freescale.com>
To: Yoni Levin <yonil@slydetech.com>
Cc: linuxppc-embedded@ozlabs.org
Subject: Re: Power Managment (mpc83xx)
Date: Mon, 13 Aug 2007 11:11:35 -0500 [thread overview]
Message-ID: <20070813161135.GA17638@ld0162-tx32.am.freescale.net> (raw)
In-Reply-To: <6954FEB9E3130645ABAFEE8D5E2C7C141FE8B6@slydesvr.Slyde.local>
On Mon, Aug 13, 2007 at 02:44:50PM +0300, Yoni Levin wrote:
> I have mpc83xx, and I work with Linux 2.6
>
> I am trying to use power management states.
>
> I succeed to get into D1 state (echo standby > /sys/power/state),
That's actually closer to D3hot than D1. It uses sleep mode, but does
not power down the core.
> And to waked up by GPIO.
>
> But when I try tried echo mem > /sys/power/state it waked up by reset
> (that stuck in the middle)
You need u-boot support to resume from deep sleep on 831x. See the code
in the mpc8313erdb board files.
> Or echo disk > /sys/power/state didn't went to sleep at all.
There's no support for suspend-to-disk in my patchset.
-Scott
prev parent reply other threads:[~2007-08-13 16:11 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-08-13 11:44 Power Managment (mpc83xx) Yoni Levin
2007-08-13 16:11 ` Scott Wood [this message]
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